Add 21/98 and 12/81
21/98 + 12/81 is 137/378.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 81 is 7938
Next, find the equivalent fraction of both fractional numbers with denominator 7938 - For the 1st fraction, since 98 × 81 = 7938,
21/98 = 21 × 81/98 × 81 = 1701/7938 - Likewise, for the 2nd fraction, since 81 × 98 = 7938,
12/81 = 12 × 98/81 × 98 = 1176/7938 - Add the two like fractions:
1701/7938 + 1176/7938 = 1701 + 1176/7938 = 2877/7938 - 2877/7938 simplified gives 137/378
- So, 21/98 + 12/81 = 137/378
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